must unsew
Irregular verb: unsew - unsewed- unsewn

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must unsew
you must unsew
he must unsew
we must unsew
you must unsew
they must unsew 	I must be unsewing
you must be unsewing
he must be unsewing
we must be unsewing
you must be unsewing
they must be unsewing	I must have unsewn
you must have unsewn
he must have unsewn
we must have unsewn
you must have unsewn
they must have unsewn	I must have been unsewing
you must have been unsewing
he must have been unsewing
we must have been unsewing
you must have been unsewing
they must have been unsewing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't unsew
you mustn't unsew
he mustn't unsew
we mustn't unsew
you mustn't unsew
they mustn't unsew 	I mustn't be unsewing
you mustn't be unsewing
he mustn't be unsewing
we mustn't be unsewing
you mustn't be unsewing
they mustn't be unsewing	I mustn't have unsewn
you mustn't have unsewn
he mustn't have unsewn
we mustn't have unsewn
you mustn't have unsewn
they mustn't have unsewn	I mustn't have been unsewing
you mustn't have been unsewing
he mustn't have been unsewing
we mustn't have been unsewing
you mustn't have been unsewing
they mustn't have been unsewing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I unsew?
must you unsew?
must he unsew?
must we unsew?
must you unsew?
must they unsew? 	must I be unsewing?
must you be unsewing?
must he be unsewing?
must we be unsewing?
must you be unsewing?
must they be unsewing? 	must I have unsewn?
must you have unsewn?
must he have unsewn?
must we have unsewn?
must you have unsewn?
must they have unsewn? 	must I have been unsewing?
must you have been unsewing?
must he have been unsewing?
must we have been unsewing?
must you have been unsewing?
must they have been unsewing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I unsew?
mustn't you unsew?
mustn't he unsew?
mustn't we unsew?
mustn't you unsew?
mustn't they unsew? 	mustn't I be unsewing?
mustn't you be unsewing?
mustn't he be unsewing?
mustn't we be unsewing?
mustn't you be unsewing?
mustn't they be unsewing? 	mustn't I have unsewn?
mustn't you have unsewn?
mustn't he have unsewn?
mustn't we have unsewn?
mustn't you have unsewn?
mustn't they have unsewn? 	mustn't I have been unsewing?
mustn't you have been unsewing?
mustn't he have been unsewing?
mustn't we have been unsewing?
mustn't you have been unsewing?
mustn't they have been unsewing?